﻿using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing.Printing;
using System.Drawing.Imaging;
using System.IO;
using Microsoft.Reporting.WinForms;
using System.Data;
using card;

namespace S1882I
{
   public class ConvertTools
    {
        //从汉字转换到16进制
        public static string ToHex(string s, string charset)
        {
            if ((s.Length % 2) != 0)
            {
                s += " ";//空格
                //throw new ArgumentException("s is not valid chinese string!");
            }
            System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
            byte[] bytes = chs.GetBytes(s);
            string str = "";
            for (int i = 0; i < bytes.Length; i++)
            {
                str += string.Format("{0:X}", bytes[i]);
                //if (fenge && (i != bytes.Length - 1))
                //{
                //    str += string.Format("{0}", ",");
                //}
            }
            return str.ToLower();
        }

        //从16进制转换成汉字
        public static string UnHex(string hex, string charset)
        {
            if (hex == null)
                throw new ArgumentNullException("hex");
            hex = hex.Replace(",", "");
            hex = hex.Replace("\n", "");
            hex = hex.Replace("\\", "");
            hex = hex.Replace(" ", "");
            if (hex.Length % 2 != 0)
            {
                hex += "20";//空格
            }
            // 需要将 hex 转换成 byte 数组。 
            byte[] bytes = new byte[hex.Length / 2];

            string s_str;
            s_str = "";
            for (int i = 0; i < bytes.Length; i++)
            {
                try
                {
                    // 每两个字符是一个 byte。 
                    bytes[i] = byte.Parse(hex.Substring(i * 2, 2),
                    System.Globalization.NumberStyles.HexNumber);

                    //System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
                    //s_str = s_str + chs.GetString(bytes, 0, bytes.Length - 1);
                }
                catch
                {
                    // Rethrow an exception with custom message. 
                    throw new ArgumentException("hex is not a valid hex number!", "hex");
                }
            }
            System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);
            //return chs.GetString(bytes);
            return chs.GetString(bytes, 0, bytes.Length - 1);
            //return s_str;
        }


       

    }
}
